/*
	FluorineFx open source library 
	Copyright (C) 2007 Zoltan Csibi, zoltan@TheSilentGroup.com, FluorineFx.com 
	
	This library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License as published by the Free Software Foundation; either
	version 2.1 of the License, or (at your option) any later version.
	
	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	Lesser General Public License for more details.
	
	You should have received a copy of the GNU Lesser General Public
	License along with this library; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
using System;
using System.Collections;

namespace FluorineFx.Collections
{
    /// <summary>
    /// Synchronized <see cref="IDictionaryEnumerator"/> that should be returned by synchronized
    /// dictionary implementations in order to ensure that the enumeration is thread safe.
    /// </summary>
    internal class SynchronizedDictionaryEnumerator : SynchronizedEnumerator, IDictionaryEnumerator
    {
        public SynchronizedDictionaryEnumerator(object syncRoot, IDictionaryEnumerator enumerator)
            : base(syncRoot, enumerator)
        {
        }

        protected IDictionaryEnumerator Enumerator
        {
            get { return (IDictionaryEnumerator)_enumerator; }
        }

        public object Key
        {
            get
            {
                lock (_syncRoot)
                {
                    return Enumerator.Key;
                }
            }
        }

        public object Value
        {
            get
            {
                lock (_syncRoot)
                {
                    return Enumerator.Value;
                }
            }
        }

        public DictionaryEntry Entry
        {
            get
            {
                lock (_syncRoot)
                {
                    return Enumerator.Entry;
                }
            }
        }
    }
}
